#include<iostream>
#include<string>
#include<vector>

using namespace std;

vector<int> mul(vector<int>& A,int b)
{
    vector<int> ret;
    for(int i=0,t=0;i<A.size()||t;++i)
    {
        if(i<A.size()) t+=A[i]*b;
        ret.push_back(t%10);
        t/=10;
    }
    while(ret.size()>1&&ret.back()==0) ret.pop_back();
    return ret;
}

int main()
{
    string a;
    int b;
    
    vector<int> A;
    cin>>a>>b;
    for(int i=a.size()-1;i>=0;--i)
        A.push_back(a[i]-'0');
    
    auto ret=mul(A,b);
    for(int i=ret.size()-1;i>=0;--i)
        cout<<ret[i];
    return 0;
}